Sen. Marco Rubio, R-Fla., addresses the American Conservative Union Conference in National Harbor, Maryland, in this March file photo.

Written by

Catalina Camia
| USA TODAY

"I do not believe that human activity is causing these dramatic changes to our climate the way these scientists are portraying it," Rubio said Sunday on ABC's This Week. "And I do not believe that the laws that they propose we pass will do anything about it, except it will destroy our economy."

The White House last week released a National Climate Assessment prepared by hundreds of the nation's top scientists. The report details how the warming of the past 50 ...